[Elecraft] OP1 and CW filter gain difference?

[Vic Rosenthal]

Marteinn Sverrisson wrote:

> Vic and Stewart, Tanks for answering
> 
> well, the ripple on the CW filter at 2kHz BW is abt 8db p-p.
> 
> the gain difference when the CW filter is offset to 1.2kHz
> (for digital modes) and its BW is 1kHz is abt -3dB relative to
> the OP1 filter (not bad?).
> 
> with the same at 200Hz BW the gain is -10dB relative to the OP1.
> 
> Maybe this is normal, 

It seems more or less so.  Some people have less attenuation when moving from 1 
KHz to 200 Hz.  It wouldn't hurt to make sure the toroid T7 is wound with the 
proper number of primary and secondary turns.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco